US8900997B2 - Method for forming a dual damascene structure of a semiconductor device, and a semiconductor device therewith - Google Patents
Method for forming a dual damascene structure of a semiconductor device, and a semiconductor device therewith Download PDFInfo
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- US8900997B2 US8900997B2 US14/072,881 US201314072881A US8900997B2 US 8900997 B2 US8900997 B2 US 8900997B2 US 201314072881 A US201314072881 A US 201314072881A US 8900997 B2 US8900997 B2 US 8900997B2
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- 238000000034 method Methods 0.000 title claims abstract description 52
- 230000009977 dual effect Effects 0.000 title claims abstract description 19
- 239000004065 semiconductor Substances 0.000 title claims description 23
- 238000009413 insulation Methods 0.000 claims abstract description 62
- 238000004528 spin coating Methods 0.000 claims abstract description 10
- 239000004020 conductor Substances 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 102
- 238000005530 etching Methods 0.000 description 7
- 239000010949 copper Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000006117 anti-reflective coating Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- -1 region Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
- H01L21/76804—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics by forming tapered via holes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76877—Filling of holes, grooves or trenches, e.g. vias, with conductive material
- H01L21/76879—Filling of holes, grooves or trenches, e.g. vias, with conductive material by selective deposition of conductive material in the vias, e.g. selective C.V.D. on semiconductor material, plating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
- H01L21/76807—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics for dual damascene structures
- H01L21/76808—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics for dual damascene structures involving intermediate temporary filling with material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/5226—Via connections in a multilevel interconnection structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/5329—Insulating materials
- H01L23/53295—Stacked insulating layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- Korean Patent Application No. 10-2012-0153753 filed on Dec. 26, 2012, in the Korean Intellectual Property Office, and entitled: “A Method for Forming a Dual Damascene Structure of a Semiconductor Device, and a Semiconductor Device Therewith,” is incorporated by reference herein in its entirety.
- Embodiments relate to a method for forming a dual damascene structure of a semiconductor device, and a semiconductor device therewith.
- a copper (Cu) wire process may be used instead of an aluminum (Al) wire process
- a low dielectric constant (low k) material layer may be used instead of an oxidation layer as an insulating layer.
- Embodiments are directed to a method of forming a dual damascene structure of a semiconductor device, the method including sequentially forming a first insulation layer and a second insulation layer on a substrate, forming a resist mask having a pattern for forming a via hole on the second insulation layer, forming a via hole down to a lower end of the first insulation layer, forming a hardmask layer in the via hole and on the second insulation layer using a spin-coating method, forming a resist mask having a pattern for forming a trench hole on the hardmask layer, forming a first trench hole through the resist mask having the pattern for forming the trench hole, the first trench hole being formed down to a lower end of the second insulation layer, respectively removing a part of the hardmask layer in the via hole and a part of the hardmask layer on the second insulation layer, forming a second trench hole by removing a part of the first insulation layer between a top corner of the hardmask layer remaining in the via hole and a bottom corner of the first
- the second trench hole may have a curved shape in cross-section.
- Forming the hardmask layer may include performing a heat treatment at a temperature ranging from about 200° C. to about 500° C.
- the method may further include forming an auxiliary layer including silicon on the hardmask layer before the forming of the resist mask having the pattern for forming the trench hole.
- the method may further include forming a bottom antireflective coating before the forming of the hardmask layer.
- the hardmask layer may be formed to be about 2000 ⁇ to about 3800 ⁇ thick, measured with reference to the upper end of the second insulation layer.
- the first trench hole may be formed to have a depth of about 40% to about 80% of a combined thickness the first insulation layer and the second insulation layer.
- the hardmask layer remaining in the via hole and the hard mask layer remaining on the second insulation layer may be respectively about 9500 ⁇ to about 10,000 ⁇ and about 500 ⁇ to about 1000 ⁇ thick.
- Embodiments are also directed to a semiconductor device including a plurality of patterns, which is fabricated according to the method as claimed in claim 1 .
- FIG. 1 illustrates stages in a method of forming a dual damascene structure of a semiconductor device according to an example embodiment.
- FIG. 1 a method of forming a dual damascene structure of a semiconductor device according to an embodiment is illustrated referring to FIG. 1 .
- FIG. 1 illustrates stages in a method of forming a dual damascene structure of a semiconductor device according to an example embodiment.
- a first insulation layer 3 and a second insulation layer 7 are sequentially formed on a substrate 1 .
- the substrate 1 may have a metal wire (not shown) or lower structure, e.g. a semiconductor device and the like.
- an etch-stop layer (not shown) may be formed between the first insulation layer 3 and the substrate 1 .
- the first insulation layer 3 and the second insulation layer 7 may be formed of a general insulating material used in the dual damascene process for a semiconductor device, e.g., TEOS (tetraethyl orthosilicate).
- TEOS tetraethyl orthosilicate
- a resist mask 10 having a pattern for forming a via hole is formed on the second insulation layer 7 .
- the resist mask 10 may be formed using, e.g., a chemical vapor deposition or spin-coating method.
- a via hole (V) is etched using the pattern of the resist mask 10 .
- the via hole (V) is formed down to the lower end of the first insulation layer 3 , e.g., the via hole (V) is formed through the second insulation layer 7 and the first insulation layer 3 so as to expose the substrate 1 .
- the resist mask 10 on the second insulation layer 7 may be removed.
- a hardmask layer 20 is formed in the via hole (V) and on the second insulation layer 7 .
- the hardmask layer 20 may fill the via hole (V) and cover the second insulation layer 7 adjacent to the via hole (V).
- the hardmask layer 20 works as an interlayer transmitting the fine pattern of the resist to the material layer through a selective etching process.
- the hardmask layer 20 is formed using a spin-coating method.
- the hardmask layer 20 formed using the spin-coating method may provide an excellent gap-filling characteristic, and may provide a better gap-filling characteristic than a hardmask layer formed using a chemical vapor deposition method. Accordingly, the hardmask layer 20 formed using the spin-coating method may fill the via hole without a void despite increases in the aspect ratio of the pattern as the pattern becomes finer.
- the hardmask layer 20 formed using the spin-coating method may make it possible to design various structures of a device and improve reliability of the device compared with the hardmask layer formed in the chemical vapor deposition method.
- the hardmask layer 20 is formed to have a predetermined height on the second insulation layer 7 by coating a hardmask composition in the via hole (V) and on the second insulation layer 7 .
- the hardmask layer 20 may be about 2000 ⁇ to about 3800 ⁇ thick.
- the thickness of the hardmask layer 20 is measured with reference to the upperend of the second insulation layer 7 .
- the formation of the hardmask layer 20 may further include a heat-treatment at about 200° C. to about 500° C.
- the heat treatment may be performed in a range of about 350° C. to about 400° C.
- the heat treatment within the temperature range may secure sufficient cross-linking and gap-filling characteristics of the hardmask composition, and improve efficiency in a subsequent trench formation process.
- the heat treatment may be performed in the air or under a nitrogen atmosphere.
- a bottom antireflective coating (BARC) layer (not shown) may be further formed.
- An auxiliary layer (not shown) including silicon may be formed on the hardmask layer 20 .
- the auxiliary layer along with the hardmask layer 20 may play a role of providing etching resistance.
- a resist mask 30 having a pattern for forming a trench hole is formed on the hardmask layer 20 .
- the resist mask 30 is used to form a first trench hole T 1 .
- the first trench hole T 1 is formed down to the lower end of the second insulation layer 7 .
- the resist mask 30 is removed.
- the first trench hole T 1 may be patterned to have a depth of about 40% to 80% of the thickness sum of the first insulation layer 3 and the second insulation layer 7 when the thickness sum is 100%.
- the first trench hole T 1 may be about 3200 ⁇ to 7200 ⁇ deep when TEOS 9K, for example, is used as a deposition material.
- a margin regulating a structure of a via top corner and a trench bottom corner in a subsequent process may be secured.
- the margin may make an etching rate difference between a fine pattern of loading/micro-loading and a wide pattern during dry etching uniform.
- the hardmask layer 20 formed in the via hole (V) and on the second insulation layer 7 is partially removed.
- portions of the hardmask layer 20 remaining in the via hole (V) and on the second insulation layer 7 after partially removing the hardmask layer 20 are respectively about 9500 ⁇ to about 10,000 ⁇ thick and about 500 ⁇ to about 1000 ⁇ thick.
- the thickness of the remaining hardmask layer 20 is obtained with reference to TEOS 9K as a deposition material.
- the hardmask layer 20 in the via hole (V) is partially removed and left within the range, so that the structure of a via top corner and a trench bottom corner may be easily designed, forming a fine pattern.
- the hardmask layer 20 on the second insulation layer 7 is partially removed and left within the range, so that the remaining hardmask layer 20 may work as an etch resistance layer in a subsequent process of forming a second trench hole T 2 .
- the partial removal of the hardmask layer 20 in the via hole (V) and the second insulation layer 7 may be performed under a chamber pressure ranging from about 5 mTorr to about 10 mTorr, a high frequency (60 M) RF electric power ranging from about 100 W to about 500 W, a low frequency (2 M) RF electric power ranging from about 1000 W to about 2000 W, and an O 2 gas flow rate ranging from about 20 SCCM to about 50 SCCM for about 5 seconds to about 10 seconds.
- a chamber pressure ranging from about 5 mTorr to about 10 mTorr
- a high frequency (60 M) RF electric power ranging from about 100 W to about 500 W
- a low frequency (2 M) RF electric power ranging from about 1000 W to about 2000 W
- an O 2 gas flow rate ranging from about 20 SCCM to about 50 SCCM for about 5 seconds to about 10 seconds.
- the second trench hole T 2 is formed by partially removing the first insulation layer 3 between the top corner of the via hole (V) (via top corner) and the bottom corner of the first trench hole T 1 (trench bottom corner).
- the lower end of the second trench hole T 2 may have a curved shape.
- the via top corner of the via hole (V) and the trench bottom corner of the first trench hole T 1 may be connected with a curved line in the cross-section of a semiconductor pattern.
- efficiency in a subsequent process of depositing a conductive material may be increased.
- the hardmask layer 20 remaining in the via hole (V) and on the second insulation layer 7 is removed.
- the removal of the hardmask layer 20 remaining in the via hole (V) may also include removing an etch-stop layer (not shown) exposed at the lower end of the via hole (V).
- the via hole (V) and the second trench hole T 2 are filled with a conductive material to form an upper wire.
- the conductive material may be, e.g., copper (Cu).
- the filling may be performed with a deposition method.
- a semiconductor device including a plurality of patterns fabricated in the method of forming a dual damascene structure is provided.
- the dual damascene process may be classified as a via-first dual damascene (VFDD) process of first etching a via hole and then forming a trench hole, and a trench-first dual damascene (TFDD) process of first etching a trench hole and then forming a via hole.
- the via-first dual damascene process may contribute to increasing efficiency in a subsequent process of forming a wire by regulating an angle between a via top corner and a trench bottom corner, when the trench hole is etched after etching the via hole, and then charging it with a hardmask composition.
- example embodiments may provide a method of manufacturing a semiconductor device, and a method of forming a dual damascene structure for a copper wire.
- An example embodiment may provide a method of forming a dual damascene structure of a semiconductor device by spin-coating a hardmask composition to help control a profile between a via top corner and a trench bottom corner.
- Another example embodiment may provide a semiconductor device fabricated according to the method of forming a dual damascene structure.
- An example embodiment may provide a structure of a via top corner and a trench bottom corner, which is advantageous for a subsequent process, by applying a hardmask composition in a spin-coating method.
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- Condensed Matter Physics & Semiconductors (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
<Description of Symbols> |
1: substrate | 3: first insulation layer | ||
7: |
10, 30: resist mask | ||
20: hardmask layer | V: via hole | ||
T1: first trench hole | T2: second trench hole | ||
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020120153753A KR20140083696A (en) | 2012-12-26 | 2012-12-26 | A method for forming dual damascene structure of semiconductor device, and a semiconductor device thereof |
KR10-2012-0153753 | 2012-12-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20140175669A1 US20140175669A1 (en) | 2014-06-26 |
US8900997B2 true US8900997B2 (en) | 2014-12-02 |
Family
ID=50973741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US14/072,881 Active US8900997B2 (en) | 2012-12-26 | 2013-11-06 | Method for forming a dual damascene structure of a semiconductor device, and a semiconductor device therewith |
Country Status (4)
Country | Link |
---|---|
US (1) | US8900997B2 (en) |
KR (1) | KR20140083696A (en) |
CN (1) | CN103904024B (en) |
TW (1) | TWI512895B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106711082B (en) * | 2015-07-28 | 2019-07-30 | 中芯国际集成电路制造(上海)有限公司 | The manufacturing method of semiconductor devices |
CN107170708A (en) * | 2017-05-08 | 2017-09-15 | 上海华力微电子有限公司 | Beneficial to the via-hole fabrication process of filling |
TWI833228B (en) * | 2022-03-31 | 2024-02-21 | 南亞科技股份有限公司 | Method for fabricating semiconductor device |
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US20010006848A1 (en) | 1999-04-19 | 2001-07-05 | National Semiconductor Corporation | Methylated oxide-type dielectric as a replacement for SiO2 hardmasks used in polymeric low K, dual damascene interconnect integration |
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US6426298B1 (en) * | 2000-08-11 | 2002-07-30 | United Microelectronics Corp. | Method of patterning a dual damascene |
KR20020070630A (en) | 2001-02-28 | 2002-09-10 | 인터내셔널 비지네스 머신즈 코포레이션 | Method for dual-damascene patterning of low-k interconnects using spin-on distributed hardmask |
KR20020070631A (en) | 2001-02-28 | 2002-09-10 | 인터내셔널 비지네스 머신즈 코포레이션 | Interconnect structure with precise conductor resistance and method to form same |
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US20030170978A1 (en) | 2002-03-05 | 2003-09-11 | Shyh-Dar Lee | Method of fabricating a dual damascene structure on a semiconductor substrate |
KR20030079994A (en) | 2001-02-28 | 2003-10-10 | 인터내셔널 비지네스 머신즈 코포레이션 | HYBRID LOW-k INTERCONNECT STRUCTURE COMPRISED OF 2 SPIN-ON DIELECTRIC MATERIALS |
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CN102800626A (en) * | 2012-08-16 | 2012-11-28 | 上海华力微电子有限公司 | Method for preparing dielectric film on dual damascene structure through etching forming process |
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2012
- 2012-12-26 KR KR1020120153753A patent/KR20140083696A/en not_active Application Discontinuation
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2013
- 2013-10-28 CN CN201310516715.8A patent/CN103904024B/en active Active
- 2013-10-31 TW TW102139526A patent/TWI512895B/en active
- 2013-11-06 US US14/072,881 patent/US8900997B2/en active Active
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US20010006848A1 (en) | 1999-04-19 | 2001-07-05 | National Semiconductor Corporation | Methylated oxide-type dielectric as a replacement for SiO2 hardmasks used in polymeric low K, dual damascene interconnect integration |
US6514856B2 (en) * | 2000-02-15 | 2003-02-04 | Nec Corporation | Method for forming multi-layered interconnect structure |
US6426298B1 (en) * | 2000-08-11 | 2002-07-30 | United Microelectronics Corp. | Method of patterning a dual damascene |
KR20040031695A (en) | 2001-02-28 | 2004-04-13 | 인터내셔널 비지네스 머신즈 코포레이션 | Low-k interconnect structure comprised of a multilayer of spin-on porous dielectrics |
KR20020070630A (en) | 2001-02-28 | 2002-09-10 | 인터내셔널 비지네스 머신즈 코포레이션 | Method for dual-damascene patterning of low-k interconnects using spin-on distributed hardmask |
KR20020070631A (en) | 2001-02-28 | 2002-09-10 | 인터내셔널 비지네스 머신즈 코포레이션 | Interconnect structure with precise conductor resistance and method to form same |
KR20030079994A (en) | 2001-02-28 | 2003-10-10 | 인터내셔널 비지네스 머신즈 코포레이션 | HYBRID LOW-k INTERCONNECT STRUCTURE COMPRISED OF 2 SPIN-ON DIELECTRIC MATERIALS |
US20030170978A1 (en) | 2002-03-05 | 2003-09-11 | Shyh-Dar Lee | Method of fabricating a dual damascene structure on a semiconductor substrate |
KR20040058959A (en) * | 2002-12-27 | 2004-07-05 | 주식회사 하이닉스반도체 | Method of forming a dual damascene pattern |
US7611986B2 (en) * | 2005-04-11 | 2009-11-03 | Imec | Dual damascene patterning method |
KR20080076235A (en) | 2007-02-15 | 2008-08-20 | 주식회사 하이닉스반도체 | Method of forming a dual damascene pattern in a semiconductor device |
US20120129337A1 (en) | 2010-11-22 | 2012-05-24 | Shin-Chi Chen | Dual damascene process |
Also Published As
Publication number | Publication date |
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CN103904024B (en) | 2016-09-07 |
KR20140083696A (en) | 2014-07-04 |
US20140175669A1 (en) | 2014-06-26 |
TW201428890A (en) | 2014-07-16 |
CN103904024A (en) | 2014-07-02 |
TWI512895B (en) | 2015-12-11 |
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